A warehouse contains 55 boxes. Then a truck delivers a number of boxes at 12:00 p.m. and the team begins to unload them immediately. By 3:00 p.m., the ware house contains 90 boxes. Suppose the boxes are unloaded at a constant rate. How many boxes are in the warehouse when the truck is finally empty at 8:30 p.m.?

Answer:i believe the answer to this is 145Stepbystep explanation:i added 90 to 55 and that is what i got so i believe its correct